Sine bar



FIG. 1 is a left side elevational view of a sine bar showing my newdesign, the right side being a mirror image thereto;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a front elevational view thereof.

The ornamental design for a sine bar, as shown and described.